GCSE Biology - Specialised Exchange Surfaces 

hey cognito!! i got my o'level results a few days back and i scored A*s in all sciences! i couldn't afford tuitions for any subjects and at first i was really scared that i wouldn't be able to get good grades. everyone else in my class got tuitions. your videos were the only thing that helped me. it's such a great thing that you've uploaded all of this for free. everyone else only cares about making money. ur the besttttt

and when we needed him the most... the king came back! 👑

I have to say thank you soooo much😭 For some reasons, I didn't have any lessons in year 8 and 9, I can’t catch up any of the subjects, but your videos helped me a lot, really. At first, I got all the subject 3-4, but I’m catching up because of your video, I’ve just done mocks, and got my result back. I got both 9 in chemistry and physics, and both 8 in maths and biology. Really thank you very much, without your video, I’m absolutely still struggle about science and maths. You saved my life, thank you🥹😭 I hope you can see my comment.✨

I was a C grade student and was lacking behind, but your website and your youtube videos helped me a lot. thanks

ever since i started doing igcse, i had trouble in learning stuff, this channel has saved sooo many lives... Keep up the good work!!

i hope u see this cuz you’ll never understand how much you’ve helped me with all my subjects. I am forever grateful for your vids man tysm, I love how straightforward ur vids are and the presentation. again man, tysm you’re a life saver. 😭😭

I have to say thank you, you make it so easy to understand such challenging topics. I’m surprised you aren’t a massive platform yet!

I didn't take biology, but i recently found this wonderful channel. Just want to say a big thank you for making the difficult concepts sooooo much easier!😍😍

Thank you so, so much! Your website is the BEST math & science platform I've ever used. It shows me my mistake, where I went wrong, and how to get the correct answer. It's like a teacher right beside me, helping me! The exam & practice worksheets are very useful as well. It helps me a lot, and your videos are beautifully explained. Thanks so much again!!

Hi, your videos came to my rescue! I had my gcse equivalency test which I had to pass to get into my teacher training. Fortunately, i passed the exam with more marks than I needed. All THANKS to you! GOD BLESS YOU :) LOVE FROM- INDIA.

Thank you so so much Mr cognito guy. Your videos helped me so so much and I am forever grateful for your help. Only with your videos, I was able to get a grade 8 for my mocks. Thank you soo much!

I have to say these are pretty much the most helpful videos on youtube for maths and science. You explain so well and help me so much. Thanks alot!

These videos and the online cognito tool is better than anything else out there. I have my GCSEs in june ans just bought the premium now to replace seneca. Keep up the good work!!

thank you so much for your videos. you give us much more than just a good explanation but you give us diagrams and visual representations which helps us so much more. your app is literally perfection and has everything i need and i use it all the time to revise for my quizzes and mocks.

Thank you so much your the only one explaining all GCSE science concepts and have made a free website, this really helps me a lot when I learn and revise.

Thank you so much!!! I just finished the whole playlist for biolagy i couldn't of done it without you your videos are so simple yet informative they should teach like this in school if possible thanks a lot im on my way to study A levels :)

Being a student over the course of 11+ years filled with numerous experiences, transitions, interactions and in particular the knowledge gained whether it was related to academics or perhaps the practical world around me, has been a nice way to spend these several years. My hard work throughout these 11+ years has been apparent through my records whether it was just a brief document of my grade sheet, work experience/summer workshops feedback and currently my GCSE's predicted grades. Fortunately, my experiences of transitioning through 3 different schools in different cities and specifically different countries have prepared me to become organized and efficient.Furthermore, these 11+ years has shaped me to become dedicated towards my academics and essential life skills.Personally, I have been

Could you do videos for alevel/btec level 3? It would be greatly appreciated 😄

Your channel really helped me with my IGCSEs last year but now I'm doing my A levels and there aren't many channels that cover topics as well as you. Do you ever plan on covering A level topics or will this channel keep focusing solely on GCSEs? Thanks for all the great videos!

omg this is the best chanel ever it helped me pass my exams easily im so happy i found it on the right time it needs recognition

Bro is just a real life hero for gcse students! you helped me a lot! Salute for all of the hard work you have done soo far to help us teach us!

Greatly appreciated! Please more videos 💐

got 8-8 in combi science so thank you so much! really hoping you decide to do a level bio because it would be a lifesaver for so many.

Amadeus & tom, you have literally saved my grades, whatever i do it'll never be enough to thank you

Heyy!! Your videos are very catchy and easy to follow along. I’ve been struggling with understanding the topics and cognito really helped me to catch it really easily and quickly. Especially the website’s amazing, I’m being able to judge my progressions and being able to work more on the weaker one. I’d like to make a request to you to pls cover up the computer science topics for the O- Levels as well since there aren’t much content creators for it like for physics, chemistry etc.. Hope you’ll do it soon, and thank you once again

I literally have a test on this in like 3 days and you decided to save me 😫 thank you

Hello! 1 months ago I received my biology grades and I got an A! I wouldn't have gotten an A if it wasn't for you and your videos! Thank you so much!

Just commenting to say thank you for your help during my exams. Your videos were the best for science you explain so well and I have managed to achieve really good grades. Thank you cognito for your videos which have really helped.

Congrats on 700K subscribers! Hope you reach 1M very soon 🔥

Hey cognito, if you are reading this please dont give up and keep uploading. I know you dont have a big audience but we are always going to be here. Much love you cognito♥️♥️😃

Hi Cognito! i just wanted to thank you sm for these videos they really are a great help! but i also wanted to ask could you maybe put them all into playlists by topic please? sometimes its quite difficult to navigate around within the subject by which video belongs to which topic in that subject. Again, THANK YOU SM FOR YOUR AMAZING VIDS!!!

thank you once again!! my paper 1 for bio is next tuesday, and you guys have helped me through mocks up till now! let’s see how the gcses go :)

Hello! I greatly appreciate your splendid and visually apealing tutorials. However, for the playlists of the three sciences, Physics, Chemistry and Biology, would the videos cover every aspect needed for the gcse or igcse exams? Thanks! 😀

i just wanna say thank you so much fro these videos on this channel it help me so much during my gcses and would recommend to everyone to watch. because of this channel it made me get a grade 9-8 in combined science. thank you so much cognito

First Comment Love from Pakistan I'm private Gcse student appearing in May June 2023 exam. You are such a blessing for us keep shining 🌟 like a star our love is always for you

king u helped me pass every single exam with almost a perfect score i appreciate you very much

I really love all your videos, they all are very informative and helpful. And your website is amazing, I've beem using it since the past year. I really really want you to make more videos!

Thank you so much for all of these videos as they’ve really helped me with science this year. I really appreciate all the effort you’ve put in with these videos so a big thanks from me and on behalf of all science students this hear

This channel is amazing and so underrated, and I have a question: Are you going to expand the number of subjects you teach on this channel or not?

Hey cognito!~ I loved ur videos

thank you soo much, u helped me so much during my final exams. i hope u start posting again!

ur vids r fr the best when i changed systems i was a whole 2 terms behind and on my mid term i got mostly a's mostly from ur vids

Hey Cognito!!! Hope Your Doing Well, i wanted to say thank you so much for litreally making everything so easy for me! i revise all my class work from you :> ... also i mentiond ur channel to my school so when ever they are putting any videos they use ur channel :> TYSM ❤

Thank you for creating and producing your videos. They are a massive help to me, especially for my learning style: simple and concise. I am doing my GCSE’s this year and I am very grateful. Also, just thinking ahead, I was wondering if you are planning on ever making A level content videos as they would be a great aid in mine and I’m sure many other student’s learning journeys. Overall, I just wanted to give thanks for all the effort you put into your videos. 🎉

Hey I have been seeing this channel for a long time and it really helped me and I would just like to know what app do you use for the note making because it is really easy for me to understand with this format.

Thanks this was really helpful!

Hi, what software do you use to create your videos? I love the format and was hoping to do something similar. Thanks!

Honestly not even exaggerating cognito helped me survive high school THANK YOU SO MUCH ❤

Why isn't this channel more popular, it deserves more recognition.

I did my GCSE's in 2020 and your videos helped me get 9's in all 3 of my sciences, I ended up coming back to your videos for help with my BMAT as well so thank!!!! I was also wondering what software you use for your animations, because they are great!

Hello Cognito team. Thank you for your great work in helping us students survive GCSES. May I ask are you planning on making content for geography and history aswell, I think that would be really beneficial as those are two other subjects that students tend to also struggle with

Hi! Are your videos geared towards OCR Combined Science A J250?

very helpful and can we have more gcse related content plz

Hey! Loved your videos so much. Just wanted to ask which software is used to create your videos please?

Ty! He is back

Please start posting again! You make my notes!!!!

Hi there! I'm considering becoming an online student to complete my O Levels, and I came across your learning platform. I'm new to this and wondering if it's possible to prepare effectively for exams like O Levels through your platform and achieve an A*? will it be possible? I'm eager to learn but a bit unsure where to start, so any guidance or advice would be greatly appreciated

Thank you for getting me all grade 9s in my sciences!

You are back!

Istg This Channel Literally In My Life Once I Wanna Meet And Thank You. Because You've Already Replaced My Teacher And Already Subbed You Sir With My 7 ID's You're A Life Saviour Before Exams This Is The End Of My 10th Boards iG I'll Try To Visit This Channel Always And I'm Always Thankful For You.

Please make video for IAL I have completed my igcse and these videos are really helpful!

Hello Cognito, i just want to ask a question, your vids are extremely helpfull, i just want to know when you are going to upload again

where are you guys why have you stopped uploading ):

hey cognito! im recently new in this country and im going to give a entrance exam for a grammar school in my area. I've been watching your videos for a while and im confused about what the gcse *9-1* papers mean. Are those papers designed for year 9 students or for the gcse exam in year 11?

Thanks for your video ❤❤😊😊your the best

One of the best videos

this is such a clear vid thank you

Have you thought about expanding to A level revision sources? I’m coming to the end of my GCSE and don’t want to say bye to these videos because the honestly teach me better than others

sooo much love for congnito channel its really helped me alot and just signed up in website and it very usefull thank u so much 🥰

hey, do you mind making a video on Molecular and Empirical formula?

What do you use to make your powerpoints?

hi what do you use to make your notes in these videos

This is a great channel, I've learned so much. Can anyone suggest to me a good POB , POA, IT and English language channel plz.

When the world needed him most

PLEASEEEE start with A levels topics as well, I'm looking forward for more videos!!

We need A level videos!!

best channel ever!!😀

This explanations gave me breath 🥱🥱

Miss ur videos you guide so good easy to understand please start making new videos this is ur latest video 11 months ago

honestly, this channel is helping me so much in preparing for my GCSEs and the website gives the exact revision I need. So helpful thank you so much.

Very good sir. Appreciate it:)

thanks for helping me get an 9-8 in my mock from a predicted 5-5 :)

bro’s out here saving lives

Do you plan on uploading more lessons to RU-vid?

i know im late to this but would u even consider posting alevel biology stuff since u helped me sm in my gcse and would love for u to help in my a levels

Hey cognito. I was thinking that you should expand to other subjects like english because im sure it would help a lot of people as well. thanks for helping me

Hi, I have a question: is Cognito planning to expand and teach other subjects like computer science or DT? These videos are great and helps me to understand complex topics easily. Thanks

I dropped out because of my mental health and was giving the exams privately without a tutor, your videos genuinely helped me cover the entire course and saved me a ton of stress so thank you so much Cognito 💙

These guys are the best

Best channel ever

Thank you so much for your videos, they're really helpful, you've just earnt yourself another subscriber. But, I made my account and set it to year 9, and now that I'm in year 10, how do I change my account to year 10?

i wanted to ask if the Cognito channel would ever produce any A-level videos for the science, because i only understood the GCSE course using this channel, as other channels can't compare to yours. But anyways thank you for all the effort to make these videos.

Bro just remembered his account password

Road to 500k, here we come!

Hey cognito can u make more videos in Chemistry like electroplating. It’s pretty tough for me so it would help a lot

come on got my biology paper 1 tomorrow 🎉🎉🎉

Thank you for your help

Will you do A-level videos someday?

hey Cognito, this question is not of relevance to the video but I wanted to reply to your latest one so you had a better chance of seeing it. I have been kind of confused about redox reactions specifically determining which element gains and which one looses electrons. In my example I took bromine reacting with a potassium iodide solution and I balanced the equation and wrote the individual ionic equations, cancelling out potassium because it is a spectator ion. I then did Br2 ---- 2Br and I know that the diatomic molecules have a neutral charge and bromine has a negative charge so its like going from 0 ---- -2 which is subtracting 2 but apparently its not loosing two electrons its gaining two, because in the answer the 2e is written on the reactant side which means its gaining and being reduced, How?

Hey quick question if I memorise every frame of all of the videos and be able to apply it will I have a high chance at getting a nine?